@ .equiv START_ROW, 	1
@ .equiv END_ROW, 		27
@ one row means 8 pixels. If above example was used, (27-1)*8=208 lines would be rendered.
.equiv START_ROW, 		0
.equiv END_ROW, 		28

@ this should be set to one only for GP2X port
.equiv EXTERNAL_YM2612, 0
